Antiskidding-tire.



VJ. GQRWIN. ANTISKIDDING TIRE.

APPLICATION FILED IEBJS, 1909.

Patented Apr.`19, 1910.

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rattan g Specification of Letters Patent. PgaQHQfPY, 2Q, igi,

.. appunti@sieurebraary is, woef, senat no. 477,581;

Beernem that i, JOHN cames, a @at zen of the United States, and residing at Chicago, in the county of vCook and State of Illinois, have invented a new and useful lm rovernent in ntislidding -Tires, of which the following 1s a complete specification.

This invention relates to improvements in antisltidding tires and more particularly to the tread therefor.

The main objects of the invention are' to provide a tire tread which will prevent the tire from skidding and will also adord a nonpuneturable tread surface Without de.- creasing the resiliency of the tire.

The invention consists of the matters hereinafter described in the specification and more fully pointed out and defined in the appended claim.

' v In the drawings: Figure 1 is a fragmentary plan view of a tire provided with a tread embodying this invention.- Fig. 2 is a section taken on line A-A of Fig. 1. Fig. 3 is a section taken on line B-B of Fig. 1. Fig. 4 is a side elevation of one of the tread platgs. Fig. 5 is a perspective view of the same.

As shown in said drawings, a tire body 1 is provided which may be of any preferrec construction, but' which, as herein shown, comprises' a. rubber tire carcass Q and a leather casing or covering 3, cemented thereon. Extending along the greater or longitudinal circumference of said casing, and on each side of the center thereof, is a shoulder 4c adapted to reduce the transverse curvature of the tire. 'Said shoulders may be formed manner, but, as herein shown, each is formed of a strip of leather cemented to the casing and having its outer surface beveled down A protecting strip 5, of leather or other suitable material, extends longitudinally around the casing and is .cemented thereto and to sai shoulders, and its edges project laterally securelyV in any preferred.

vpreferably are formed of'a tough grade of beyond theshoulders and .are riveted to the casing 3 by means of rivets' 6. As shown a tread strip 7 of leather or other preferred material, extends longitudinally around the tire body and serves to provide additional strength at the tread portion cf the\ tire, though obviously said lstrip may he\ dispensed with if preferred. On the structure thus formed are secured the tread plates 8,

steel having goodl wearing qualities. Said plates, as shown more clearly in Fig- 1, eX= tend` diagonally across the 4tire and have their ends 9 parallel lwith the longitudinal axis of the tire. Each plate comprises a central tread portion 10, which .extends longitudinally thereof, and laterally disposed protecting flanges 11,'which are adapted to overlap the intervening space a Said plates are placed near enough together on the tread strip 7 to prevent a nail or like object from entering the joint between the same but not close enough for them to bind together when the treadl surface is depressed. Each of said flanges increases in thickness toward its lateral margin to pro vide a deflecting rib 12 adapted to deflect nails or other objects from the joint should they strike the flange.

The upper surface of each plate is slightly curved longitudinally thereof so that the ends will not wear more rapidly than the central portion, and the under surface of the plate is curved on the arc of a circleintersecting the long corners 13 of the plate, so that said surface has a somewhat spiral form, as shown in Fig. 4:, to enable it to con-` form both to the transverse and the longitudinal curvature of the tire. Said plates may be secured to the tire body in any preferred manner, but, as shown, they are provided with three 'taperin apertures 11i, and split rivets 15 are insert therethrough and through the tread strip 7, protecting strip 5 and casing 3, and their inner ends 16 are clenched transversely of the plates, as shown in Fig. 2. A strip of leather or other suit-V able material 17 is cemented to the inner surface of the casing and covers the inner ends of said rivets and protects the carcass therefrom.

When the tire is in operation .the tread portions 8 of thepplates contact with the road.

between the. .tread portions 10 of adyacent plates.

.which may be of any desired material, but

may yield slightly with respect to the tire body when they strike an object.

Should a nail or other sharp object strike the lianges 1l it Will be deflected from the joints between the plates by means of the ribs 12.

Obviously a tire provided with tread plates embodying this invention will not skid and the danger of puncture throu h the tread surface is entirely eliminated. 0 viously also many details of form and construction may be Varied without departing from the principles of this invention.

I claim as my invention:

Ylhe combination with a tire body of a plurality of tread plates arranged diagonally across the tread surfacethereof and lying closely together, each of said plates havin' a rib extending the full length of each ateral margin, and aV oentrall disposed tread ortion extending aralle with said ribs and) of a greater heig t, said ribs and tread portion providin a pair of parallel channels in the plate which open from the ends ofthe plate.

In testimony whereof I have hereunto subscribed my name in the presence of two witnesses.

JOHN CRWIN. Witnesses W. W. WI'rHENBURY, FRED S. VAUGHN. 

